| 摘要 |
The invention relates to a limit switch which comprises an operating lever, a rotary shaft which is driven by the operating lever, a first cam and a second cam as mounted on the rotary shaft for transformation of rotary motion into linear motion, a return spring means for applying a returning force to the operating lever through the rotary shaft, a plunger operatively associated with the cams for turning a basic switch ON or OFF and a plunger holder for holding the plunger axially movable but not rotatable, the plunger having a plurality of integral projections corresponding to cam projections of the respective cams and disposed between the cams, and the plunger being rotatable about its axis through the plunger holder to switch the ON-OFF mode of the basic switch. <IMAGE> |
